 Quote by 600burger
The video card(s) i'm thinking about aren't that "amazing" they just have alot of memory and are fast. I'm outputting to a 42" projection, I've heard the quality with low end cards is very noticible.
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The purpose of the processing power and memory is for doing realtime 3d rendering. When you use the card to output regular video to a tv, those features are not used at all.
Different manufacturers have different reputations for 2d picture quality (ATI probably has the best), but as long as you get something within about 2 years old, there won't be any difference in the 2d capabilities between a low end and high end card. In fact, they generally use the exact same 2d hardware.